US 12,257,882 B2
Air conditioning device for vehicle
Yoshiki Shibaoka, Gunma (JP); Kouhei Yamashita, Gunma (JP); Hongming Zhang, Gunma (JP); Yoshiyuki Okamoto, Gunma (JP); Takayuki Matsumura, Gunma (JP); and Kodai Matsuzaki, Gunma (JP)
Assigned to SANDEN CORPORATION, Gunma (JP)
Appl. No. 18/044,013
Filed by SANDEN CORPORATION, Gunma (JP)
PCT Filed Aug. 26, 2021, PCT No. PCT/JP2021/031287
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2022/064946, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2020-160097 (JP), filed on Sep. 24, 2020.
Prior Publication US 2024/0278619 A1, Aug. 22, 2024
Int. Cl. B60H 1/00 (2006.01)
CPC B60H 1/00907 (2013.01) 8 Claims
OG exemplary drawing
 
1. A vehicle air-conditioning apparatus comprising:
a refrigerant circuit including a compressor configured to compress a refrigerant, a heating unit configured to heat blowing air to be blown into an air-conditioning target space, and an outdoor heat exchanger configured to cause the refrigerant to absorb heat;
a device temperature adjustment circuit including a temperature control target-specific heat exchanger configured to adjust, by use of the refrigerant, the temperature of a temperature control target mounted on a vehicle; and
a control device configured to control the refrigerant circuit and the device temperature adjustment circuit, wherein
in a heating operation for heating the interior of the vehicle by use of the heating unit, the control device is programmed to perform:
a temperature control target heat absorption heating mode in which the refrigerant that has been discharged from the compressor and has dissipated heat in the heating unit absorbs heat in the temperature control target-specific heat exchanger, and
a combined heating mode in which the refrigerant that has been discharged from the compressor and has dissipated heat in the heating unit absorbs heat in the outdoor heat exchanger and the temperature control target-specific heat exchanger, and
during the heating operation in the combined heating mode, the control device is programmed to determine an operating state that allows the refrigerant to accumulate in the outdoor heat exchanger, and switch to the temperature control target heat absorption heating mode to execute the heating operation.